Magneto



Y H. RUPPE MAGNETO .June 29, 1943f Filed Nov. 7, 19259 d 0.064666 f Y Patented June 29, i943 ICE MAGNET() Hugo Ruppe, Berlin, Germany; vested in the Alien Property Custodian Application November 7 Germany The invention relates to magnetos for auxiliary engines for vehicles, especially cycies.

The details oi the invention and the advantages it furnishes, are set forth in the following desciiption of the accompanying drawing which represent a typical embodiment of the invention.

Figure l is a vei'tical section through the crank ease; and Figures 2 and 3 show the ignitioncurrent generator, in horizontal and veiticai section, respectively.

in all the figures, corresponding paits are indicated by the saine feierence characters.

@ne of the iiy Wheels iii, ii of the two crank.- siiaits of a cycie engine is constructed of nonI magnetic material (such as brass, or nickel-steel) and a magnet it@ of hardened steel with nigh coercive properties, is inserted in the member iii, v/Ihilst two soitdron pole shoes iiii are integrally east with the cranlgcase. Between said pcie shoes, the wall of the case is slotted, to prevent electiic draining fluxes from being induced in the wall of the crank case during the passage oi lines of magnetic force through the pole Shoes Sie. The sict ist is iilled, eas-tient with insulating mateiial, to prevent leakage in the crankcase, which seives as a suction chamber. @utside the crankcase, a magnet cose iii, provided with a coil is, is attached to the pcie shoes it@ by means 1939, Serial No. 303,320

June 21, 1939 Si (Dianne. (Cl. 171-209) of screws 122. IM indicates a cap, preferably of plastic maternal,r serving as a cover and formed with an opening Wi for the passage of the ignition cable.

The arrangement and design of the commutator need not be described. It is located under the case 22 and -is actuated by a crankshaft, through a. drag crank. The mounting and design ci the necessary condenser are also immaterial.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is 'to be performed, l declare that what I claim is:

1. In an auxiliary engine of the type described, a flywheel, a permanent magnet mounted on said iiywheel, a casing surrounding said flywheel, spaced soft iron inserts imbedded in and extending through a wail of said casing adjacent said iywheel, an induction coil having a core mounted externally of said casing, and means for maintaining the respective ends of said core in contact with said soit iron inserts.

2. The device dened in claim 1, said soft iron inserts being cast integrally with said casing wall.

3. The device deiined in claim 1, said casing wall being formed with a slot between said soft iron inserts, and insulating material filling said slot in a gas-tight manner.

HUGO RUPPE. 

